<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>Document</title>
	</head>
	<body>
		<script type="text/javascript" >
			let obj = {
				a:100,
				b:200,
				demo(){
					console.log('demo',this)
				}
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			x()
		</script>
	</body>
</html>